Improvement in lamp-burners



G. -L. SMITH.

Lamp Burnen' Patented Jurie 14, 1870.

mm PHOTO-LIYHOGRAPNER WASNINGYON. D. C.

{gaunt militia To whom it may concern.

Be it known that I, Gnonen L. SMITH, of Bridge-v port, in the county of Fair eld and State of Connecticut, have invented certain, new and useful Improvements in Lamp-Burners, of which the'followiug is a specification. 1 a

My invention relates to Argand or other like annular or round wick-burners, and particularly to that class ofsuch burners in which the air which supplies thecentral draught enters atthe top of the lamp or burner, passes down through the lamp around the wick-tube, and then ascends through the central space in the wick in the wick-tube. There is also an exterior draught or current of air which passes up through the burner to the exterior of the flame without passing dow'n through the lamp. In order to produce these two currents, a horizontal partition-plate has been used to divide the air entering the burner, so that one portion shall pass up above the partition, constituting the eztterior current, and the other shall Y enter the lamp below the partition, to supply the inner oreentralgdraught. It is my object to construct a burner of this kind, so that'it shallbe simple and inexpensive, and, at the same time, be more reduced in size, and more ornamental in appearance, than has heretofore been the case. p a p My invention has reference to the construction of a that portion of the burner which carries the chimney;

and which is intended to be slipped on and off the wick-tube,- It is thronghthis portion of the burner,- wllich carries the chimney-galleryor holder and the enters; and 5 My invention eonsistsin the combination, with the chimney-gallery or holder and the partition-plate, so arranged that air-passages or spaces are left between said plate and holder, "of a perforated diaphragm, placed over the partition-plate, and extending between the holder or gallery-andthe wick-tube, so as .to form a seat or rest forthe base of the chimney, and so that the air entering the burner shall'pass through the perforated bottom, and ascend in small streams, diffused throughout the whole space included between the wick-tube and the chimney when the latter is in position. a 1 v The burner thus made is compact, can be manufactored at a small "expense, and is exceedingly neat in appearance, while the arrangement-of the perforated'diaphragm is such as to introduce the air under the best conditions to produce a brilliant illuminatingflame.@' m

, To entble those skilleddu the art to understand and us my invention, I will now proceed to describe a the manner in which the same-is or maybe carried into efieet-byreferenceto the accompany drawing, in whicha Lcttcrs Patent N 104,366, dated June 14, 187

partition or air-dividing plate, that the exterior draught GEORGE L. SMITH, or eiunenroar, CONNECTICUT, ASSIGNOR TO emncnr r a roar ,BaA-ss COMPANY, or SAME PLACE. 7

IMPROVEMENT m LA P-Bu-RNERs,

- The Schedule referred to in these Letters Patent and making part of the same.

Figure 1 is a perspective view of so much of an argand-burner of the kind above referred to as is necessary to'illustrate my invention.

Figure 2 represents a vertical central section of the same. v a

A represents the partition-plate, which divides the air entering the burner into two currents, the one passing beneath the plate, down into the lamp, and up through the central draught-passages, as above described, the other passing above the plate, through the openings a, between the gallery or chimney-holder and springs B and the partition-plate, and up into the burner, around the wick-tube and flame.

The sleeve 0, to which the partition-plate A is made fast, is intended to slip overnpon the wick-tube, in the usual manner. r

In order to divide the air into small streams, and diffuse it throughout the space included between the wick-tube and chimney when the latter is in position, I employ a finely-perforated diaphragm, b, whichis placed above the partition-plate, as shown in the drawings, so that the exterior current must pass through it before entering the burner. a p v The form of the 'diaphragm,in this instance, is concavo-convex; but it may also be 'flat or corrugated, or of other suitable form.

It is quite necessary, in burners of this class, that the exterior draught should be properly regulated and steadied, and the diaphragm is a most efl'ective device for this purpose. It admits of the burner being-made cheaply and easily, it dispenses with the use of cones or likev devices for directing the air, and it serves to diffuse air throughout the burner.

Having now described my invention, and the manner in whichthe same is or may be carried into effect That I claim, and desire to secure by Letters Pat cut, is-- In an Argaml-bnrncr, substan tially such asdeseribed, the combination, with the partition-plate, dividing the air which enters the burner into the inner and outer currents, and a chimney-gallery or holder placed over or above said plate, as set forth, of aforaminous diaphragm, arranged to support the chimney, so that the air passing between the chimney and wick-tube shall be dififused throughout the space included between said chimney and tube, substantially as and forthe purposes specified.

In testimony whereof I have signed my name to this specification before two subscribing witnesses.

GEO. L. SMITH.

Witnesses: v

F. MCGRATH, G. H. Hnwn'r'r. 

